Boiler.



UNITED STATES PATENT OFFICE.

JOHN G. (JOQKE, .OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO NEW YORKSHIPBUILDINGOOMPANY, OF CAMDEN, NEW JERSEY, A CORPO- RATION OF NEWJERSEY.

BOILER.

SPECIFICATION forming part of Letters Patent No. 714,781, dated December2, 1902.

Applioationfiled October 4,1901. Serial No. 77,515. (No model.)

0 all whom it may concern.- Be it known that I, JOHN G. OooKE, a citizenof the United States of America, residing in the city and county ofPhiladelphia, in the State of Pennsylvania, have invented a certain newand useful Improvement in Water- Tube Boilers, of which the following isa true and exact description, reference being had to the accompanyingdrawings, which form a part thereof.

My invention relates to water-tube boilers,

and has for its object particularly to improve the circulation in suchboilers, and especially to insure a'most ample supply of water to therear headers.

The nature of my improvements will be best understood as described inconnection with the drawings, in which they are illustrated, and inwhich- I Figure l is a side sectional elevation substantially throughthe center of my boiler; and Fig. 2 is a view of the rear water-drum andconnections, taken as on the section-line .22of Fig.1. 5

The boiler ,is made up of a series of front and rear headers, (indicatedat A and B,) said headers being inclined and being connected by a seriesof inclined tubes, (indicated at C.) The upper ends of the front headersA connect through nozzles a, with-the water and steam drum, (indicatedat D,) and having, as shown, a perforated deflector D above the nozzle.The upper ends of the rear headers B are also connected with the drumDthrough circulating-pipes E, and the lower ends of the rear headers areconnected through nozzles b with the mud-drum, (indicated at F.) Bypreference the intermediate front and rear headers are situatedbetweenside headers, (indicated at G and 11,) said side headers runningparallel to and abutting against the intermediate headers throughout thelength of said intermediate heads, andpreferably having prolonged lowerends (indicated at G and H) extending downward substantially vertically.The upper ends of the front side headers G connect with the drum Dthrough noz-, zles such as a, and the upper ends of the rear sideheaders H connect with the drum I through nozzles such as b, and bypreference the lower ends of the rear side headers are connected withthe ends of the mud-drum F. The front and rear side headers on each sideof the boiler are connected by inclined watertubes, those connecting thehigher portions of said headers being indicated at .I, and thoseconnecting the lower portions being indicated at J and diverging fromrear to front, as indicated, on each side of the furnace-chamber.

The drums D and I are directly connected by a circulating-pipe K.

.L is a bridge-wall, between which and the front wall M of the furnaceare situated the grate bars N and the furnace-chamber situated betweenthe diverging side wall-tubes J, M indicating the door of the furnace.

O is a deflecting-plate extending upwardly and forwardlyfrom the top ofthe bridgewall L .and directing the products of combus tion against thebottom of the drum D.

P'is a wall-plate separating the upper portion of the boiler from thetake-off flue Q and having a downwardly-extending baffle P at tubes KandE partly into the drum I and,

partly into the tubes of the rear headers, this arrangement insuring anample supply of water to the rear headers under all conditions.

Having now described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. In a water-tube boiler having inclined headers and inclinedwater-tubes connecting them, a water and steam drum D set transverselyacross the front of the boiler and con nected to the front headers, atransverse water-drum I set transversely across the rear end of theboiler and connected to the rear headers, and circulating-tubes K and Econnecting the drum D with the drum I and the upper ends of the rearheaders respectively.

2. In a water-tube boiler having inclined headers and inclinedwater-tubes connecting them, a water and steam drum D set transverselyacross the front of the boiler and con- IO nected to the front headers,a transverse Waheaders, circulating-tubes K and E connecting the drums Dwith the drum I and the upper ends of the rear headers respectively, and15 a Water-feed pipe R leading into drum I.

J. O. COOKE.

Witnesses:

CHAS. F. MYERS, D. STEWART.

